1. An Aggregate of 8,348 shares of common stock were purchased in multiple trades on August 19, 2014 at prices ranging from $1.00 to $1.02. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, GTx, Inc. or a shareholder of GTx, Inc. full information regarding the number of shares and prices at which the transaction was effected.

/s/ Henry P. Doggrell, by Power of Attorney

08/19/2014

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).